Technical Articles

FAQ - What does a 29 error code mean?

A 29 error code indicates a neutralizer drainage failure.  The neutralizer is designed to drain condensate away from the heater. If the neutralizer and/or drain becomes blocked up, the unit will flash the 29 error code to prevent the burner from being flooded.

Common issues related to the 29 error code include:

1) Blockage in the condensate drain line
2) Incorrect condensate line piping (e.g. upward sloping of drain line, trapped drain line, incorrect size piping)
Local Service Representatives can be found at

Applicable Models
  • Models: NCC199-DV-LP, NCC199-DV-NG, NCC199-SV-LP, NCC199-SV-NG, NRC111-DV-LP, NRC111-DV-NG, NRC111-SV-LP, NRC111-SV-NG, NRC98-DV-LP, NRC98-DV-NG
There are no attachments for this article.
Comments Comments
Please add a comment if you would like to provide us with feedback about this article. We will carefully analyze your feedback and use it to improve our Articles, but we will not reply to you. If you have an issue that requires a reply, please click here to contact us. If you have an urgent matter that needs immediate assistance, please call us at 866-766-7489. Otherwise, please feel free to search our website for what you need. Thank you for choosing Noritz!

Related Articles

There are no articles in this section.

Articles in same category

FAQ - What does an 11 error code mean?
Viewed 55305 times since Fri, Dec 16, 2011
FAQ - Is there an issue with installing Noritz tankless water heaters on "off the grid" or solar power sources?
Viewed 10092 times since Thu, Oct 27, 2011
FAQ - What does the flow meter alarm set button do? What does 990 mean?
Viewed 21014 times since Fri, Sep 30, 2011
Article Rating (9 Votes)
Rate this article

Subscribe to Knowledgebase

Get notified when Knowledgebase articles are added or updated.
Get notified when Knowledgebase articles are added or updated.
Copyright © 2020, NORITZ AMERICA CORP.All Rights Reserved